wiki/cards/vim.org

:PROPERTIES:
:ID:       9d549240-e7bb-4f6e-95bc-ea131a6a34e7
:END:
#+title: Anki: Vim
#+date: "2021-05-01 17:52:58 +08:00"
#+date_modified: "2021-05-07 19:31:27 +08:00"
#+language: en
#+property: anki_deck Vim

* Jump to previous jump point
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1619862911606
:END:
** Front
How to get back in previous jump point?
** Back
=Ctrl + O=

Remember it as getting *out* of the current jump point and back to the previous one.

* Enter jump point
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1619866523112
:END:
** Front
How to jump into a keyword?
** Back
- =Ctrl + ]= will enter into the definition block of a keyword.
- =K= also has the same effect.

* Go to file path
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1619866578855
:END:
** Front
How to go to the file path at point?
** Back
=gf= (in normal mode) as in *goto file*.

* Set as a pager
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1619873854130
:END:
** Front
How to set Vim as a manpager?
** Back
~MANPAGER="nvim +Man!"~

~+Man!~ is a command invocation (as if entering ~:Man~ inside Vim).
It can also be written as ~-c Man!~.

The ~:Man!~ command displays the current buffer as a manual page.

* Show outline/table of content
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1619873854327
:END:
** Front
How to show the table of contents of a document?
** Back
=gO=, although the results are filetype-specific (and some don't have any).
Helpful examples include for manual pages and help pages (from =:help=).

* Detect files through filetypes
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1619937647469
:END:
** Front
How does Vim detect the files?
** Back
Vim guesses the file by assigning *filetypes*, mainly through the file name and reading the file content.
A filetype is how Vim knows what plugins to apply to the current buffer.

Vim has a few built-in filetypes such as shell, manual pages, Markdown, Asciidoc, xmodmap, patch files, and JSON among others (that are in =$VIMRUNTIME/filetype.vim=).

For more information, run ~:help filetype~ inside Vim.

* Going to keyword definitions
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1620225232521
:END:
** Front
How to go to the keyword definition?
** Back
=gd= as in *go to definition*.

Though, not all the time it will do what its supposed to do.
For better effect, you can generate a Ctags file which Vim has a built-in integration (see ~:h ctags~).

* Vim modes
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1620225233076
:END:
** Front
What is a mode (in Vim)?
** Back
A Vim mode is a set of behavior and actions.
In this case, it considers editing and navigation (among other modes) to be separate.
Thus, you need to switch between them to do those things.

Vim has built-in modes which you can see with ~:h vim-modes~.

* Word wrapping
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1620387078116
:END:
** Front
How to do word wrapping?
** Back
=gw= as in *go format the words*.
By default, it simply line wraps the lines with the 80-character limitation.

* Using the help system
:PROPERTIES:
:ANKI_NOTE_TYPE: Styled cards
:ANKI_NOTE_ID: 1620387086463
:END:
** Front
How to effectively make use of the help system?
** Back
The usual way is to execute ~:h~ or ~:help~.
You can view what does a keybinding do with ~:h ${KEYBINDING}~ — e.g., ~:h gw~ to know what =gw= does, ~:h V~ for viewing visual line mode.
For keybindings in visual and command line mode, prepend them with ~v_~ and ~c_~, respectively.